- Universal electric drill flexible shaft extension with 3.2 mm diameter clamping. The flexible shaft is made of quality sebific duct material, strong and durable. - Widely used: Compatible with polishing kits, drill bits, wire brushes, countersinks, flap wheels, mounted stones and grinding wheels. It supports electric grinders or electric drills and is suitable for cleaning, polishing, sanding, drilling and more. - Easy to install: The flexible extension attaches to a drill or grinder. Flexible and comfortable to use, like holding a pen. To install, clip the connector handle grip onto the mill. - Flexible use and reach: 104 cm (40.9 inches) long, allowing work in small and hard-to-reach places. - Use scenarios: - Polishing tight corners on metal parts using polishing kits or small drill bits. - Cleaning and deburring welds inside confined spaces with wire brushes or mounted stones. - Sanding and finishing curved surfaces in automotive or woodworking projects.